**COMPETENCE 9 – Maintenance and Repair of Shipboard Machinery and Equipment**

### #1. If your ship burns 8 tons of fuel per hour at 15 knots, how many tons per hour will it burn at 18 knots?

**Incorrect!**

### #2. If the main propulsion diesel governor works irregularly with a jerking motion, a possible cause can be:

**Incorrect!**

### #3. If your vessel burns 4 tons of fuel per hour at 21 knots, how many tons per hour will it burn at 16 knots?

**Incorrect!**

### #4. If your ship burns 8 tons of fuel per hour at 15 knots, how many tons per hour will it burn at 20 knots?

**Incorrect!**

### #5. If your ship burns 8 tons of fuel per hour at 15 knots, how many tons per hour will it burn at 22 knots?

**Incorrect!**

### #6. Hydraulic pumps most commonly used in steering systems are of the:

**Incorrect!**

### #7. Fuel oil day tanks for diesel engines must be checked and cleaned at regular intervals in order to remove.

**Incorrect!**

### #8. If a stateroom has a 6" by 12" opening through which air travels at 100 feet per minute, what is the volume of air being supplied to the stateroom?

**Incorrect!**

### #9. If your ship burns 3 tons of fuel per hour at 19 knots, how many tons per hour will it burn at 15 knots?

**Incorrect!**

### #10. If a centrifugal pump vibrates and is noisy when operating, the cause could be:

**Incorrect!**

### #11. How many BTUs must be added to one pound of water at 32°F to raise the temperature to 212°F?

**Incorrect!**

### #12. Excessive lube oil consumption can result from worn or broken:

**Incorrect!**

### #13. If your ship burns 8 tons of fuel per hour at 15 knots, how many tons per hour will it burn at 21 knots?

**Incorrect!**

### #14. If your ship burns 5 tons of fuel per hour at 23 knots, how many tons per hour will it burn at 18 knots?

**Incorrect!**

### #15. If your ship burns 8 tons of fuel per hour at 15 knots, how many tons per hour will it burn at 19 knots?

**Incorrect!**

There are** 15 questions** for the actual examination for **Competence 9** for **OIC-EW** with a passing rate of **70%.** This means that you are only allowed to make **4 mistakes.**

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